Originally Posted by artanner
Hi. My AC was working fine and now the thermostat flashes between E1 error code and the last temperature setting. Neither the AC or the furnace is working. We have checked all the connections inside and replaced the thermostat with no success. I have read this code means loss of communication but how do we fix this. We have a 2012 Lacross RES. Thanks for any help!
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I would at least try to shut off the Circuit breaker and battery DC and then turn back on and see what you get. This may be all you need to reset the error.